Teardrops n Tiny Travel Trailers

I went 3-D yesterday. Its all 3/4 BC ply so it gonna be heavy. Its completely square, so its gonna be ugly. But I love it! I am hoping to get some pics up later. Got to bondo, sand and prime the outside today. I am hoping to be not finished but camp able by the 18th for the river trip.

Getting the sides up is always a thrill.

I am painting the generic square with exterior oil base. I am putting 2 coats of primer and 3 coats of exterior. If I have enough primer left will extra coats hurt or benefit me? Or will it be just wasting paint?